In order to achieve a GPA of 5.0, you will need to enroll in related courses such as AP, IB or honors courses and score A grades in those courses. The added grade points, awarded to these advanced courses, enable you to surpass the 4.0 scale. Concentrate on good performance, managing time, challenging yourself. In times of difficulty, ask someone for help, get organised and build a good study pattern to achieve high grades and attain a perfect GPA.
